William



(No Model.)

W.'J. MOLEAN.

STEAM AGTUATED VALVE'.

Patented Oct. 2, 1883.

UNITED STATES.

PATENT OFFICE.

TILLIAM J. MCLEAN, OF INDIANAPOLIS, INDIANA.

STEAM -AGTUATED VALVE.

SPECIFICATION forming part of Letters Patent No. 285,827, dated October 2, 1883.

Application tlcdrMareh 19, 1883. (No model.) 4 l To au whom it may concern.: i

Be it known that I, WILLIAM J. MCLEAN, of

Indianapolis, Indiana, have invented a new and useful Improvement in tSteam-Actuated Valves for Steam-Pumps, of which the followingis a description, reference being made to ,the aecompanying drawings, in the several figures of which like letters indicate like parts.

My invention relates to the construction of pumps, and its construction and operation will be hereinafter explained.

In the drawings, Figure 1 is a plan view of my device, showing the casing in section, and Fig. 2 is a similar view, the plunger being at the other end of its cylinder. Fig. 3 is a vertical 'section on the line c b, Fig. 1; Fig. 4, a vertical section on the linec d, Fig. 1. Fig. 5 is a vertical section on the line e f,Fig. 2. Fig. 6 is a vertical sectionon the line g h, Fig. 2. Fig. 7 is a longitudinal section of the cylinder in which the plunger moves, showing the plunger` and slide -valve attached and the main parts of the steam-cylinder.

In detail, K is a casing,with two cylindrical openings, in the one of which moves the plunger P', and in the other the rotary valve Rv, having two similar ends rigidly connected by rod R, which are fitted to rotate freely in the cylinder, and are connected bythe stem es to the rocker-arm O. In each of these ends or valves is one opening extending through from one side to the other, ep ep2,which are intended as exhaust-ports, and to be connected for such purpose, by the rotary movement of the valves, with two exhaust-ports formed in the casing ccp and ccp.

Two steam-port openings, sp and sp', are bored from the inner ends of the valves to nearly the opposite ends, and from thence they lead at right angles outto the surface of the valve, and these connectby the rotary movement of the valves with ports formed in the casing sp2 spi* to admit steam in behind the head of the plunger. cem is the valve exhaust-port.

The valve Re is rotated by any suitable mechanism, and itsnmovement limited by the wellf known device of a rocker-arm.

The slide-valve Sc is connected with the 5o plunger F in the ordinary way, as shown in steanraetuated valves for directacting steam- Fig. 7, @yx being the main exhaust. The arrows indicate the direction the steam is expanding and forcing the plunger in Figs. 1 and 2.

Steam being admitted into the open space between the plunger and valve-cylinders, Fig. 1, passes through the ports sp and S193, behind the head of the plunger, and forces it to the other end in the direction of the arrow. The rotary valve, being actuated at the same time, turns in a reverse direction, so as to open the connecting steam-ports sp and sp2, close the connection between the exhaust-ports ccp and cp', and to close the opposite steam-ports, sp sp, and open the exhaust-ports ep2 and ccp. The steam thus is allowed to make its way in behind the left-hand plunger-head and force it forward in the direction of the arrow, Fig. 2, the steam at the opposite end freely escaping through the now open exhaust-ports ccp and ep" into the longitudinal groove L in the casing K, and thence through the vertical ex haust-opening ocx. L is a groove in the casing communicating with opening ep in the valve Rv. The groove L has the same function as the groove L', and both communicate with the same exhaust-opening, and this alternate movement is maintained bythe plunger and rotary valve as long as the actuating mechanism is keptV in motion, and with little friction or wear of parts.

My device is simple and effective, and from what I have herein set forth will doubtless be readily understood by any one skilled in the manufactureor operation of such devices.

f Vhat I claim, and desire to secure by Letters Patent, is-

1. The double rotary valves Re, connected by rod R, and provided with stem as, all rigidly united and actuated by rock-arm C, the valves Re each havinga centralcxhaustopening,ep epi, said openings being at right angles to each other, said valves having longitudinal steam-ports sp sp, each of which is provided, near its outer end,with openings communicating with the periphery of the valve, in combination with the casing K, provided with cX- haust-grooves ccp, ccp', and L L, and vertical exhaust-opening ocx, the casing-grooves sp,

spi, and ccp ccp being horizontally interposed -Ioo between the rotary valves and plungers7 suby stantially as described, and for the purpose set forth.

2. The double rotary valves Rv, connected by` rod R, and provided with stem vs, said valves having central transverse eXhaust-openings ep epz, said openings heilig at right angles from each other, said valves having longitudinal stea1n-ports 8p sp,eXtendi1ig from their respective inner ends to nearly the opposite outside ends, Where they are interseoted by rightangled openings in the peripheries of the rotary valves, as specified7 in combination with r the exhaust-easing grooves cap Cep L L', the exhaust-easing Opening fuex, communicating i 5 with grooves L L and the steam-port grooves sp2 spa, and the plunger I, suitably connected to the slide-valve SU, substantially as described7 and for the purpose set forth.

In Witness whereof I have hereunto set my 2o hand this 6th day of March, 1883.

VILLIAM J. MCLEAN.

Vitliesses:

C. P. JACoBs7 JACOB WV. LoEPEn. 

